JuliaGPU/ArrayFire.jl

Warning with inv() and Float32

Closed this issue · 2 comments

NoelAraujo commented

I got a warning message using Float32.

julia> using ArrayFire, Random
ArrayFire v3.6.4 (OpenCL, 64-bit Linux, build 1b8030c)
[0] AMD: gfx900, 8176 MB

julia> Random.seed!(1111);

With Float64 everything is OK.

julia> a = AFArray(rand(4,4))
AFArray: 4×4 Array{Float64,2}:
 0.470171  0.584869  0.566602  0.0413684
 0.19116   0.711075  0.582562  0.321194 
 0.235326  0.282443  0.580429  0.26694  
 0.949497  0.652569  0.430244  0.169926

julia> b = inv(a)
AFArray: 4×4 Array{Float64,2}:
 -0.439821  -1.09483   0.517833   1.36306  
  0.495136   2.01835  -2.48217   -0.0363446
  1.93608   -1.29507   2.02148   -1.19898  
 -4.34593    1.64557   1.52052    1.44387

Now with Float32

julia> c = AFArray(rand(Float32, 4,4))
AFArray: 4×4 Array{Float32,2}:
 0.68572   0.0311699  0.328728  0.89972   
 0.454269  0.771371   0.401835  0.00835252
 0.424401  0.27596    0.51567   0.916684  
 0.390926  0.978439   0.141881  0.907653

julia> d = inv(c)
/tmp/AMD_11110_154/t_11110_156.cl:1:26: warning: unknown OpenCL extension 'cl_amd_printf' - ignoring [-Wignored-pragmas]
#pragma OPENCL EXTENSION cl_amd_printf : enable
                         ^
/tmp/AMD_11110_154/t_11110_156.cl:82:18: warning: assigning to '__global float *' from 'const __global float *' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
            uA.f = A + k0 * lda;
                 ^ ~~~~~~~~~~~~
/tmp/AMD_11110_154/t_11110_156.cl:178:14: warning: assigning to '__global float *' from 'const __global float *restrict' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
        uA.f = A;
             ^ ~
/tmp/AMD_11110_154/t_11110_156.cl:203:42: warning: incompatible pointer types initializing '__global float4 *' with an expression of type '__global float *' [-Wincompatible-pointer-types]
                        __global float4 *pC = uC.f;
                                         ^    ~~~~
/tmp/AMD_11110_154/t_11110_156.cl:460:34: warning: incompatible pointer types initializing '__global float4 *' with an expression of type '__global float *' [-Wincompatible-pointer-types]
                __global float4 *pC = uC.f;
                                 ^    ~~~~
5 warnings generated.
/tmp/AMD_11110_171/t_11110_173.cl:1:26: warning: unknown OpenCL extension 'cl_amd_printf' - ignoring [-Wignored-pragmas]
#pragma OPENCL EXTENSION cl_amd_printf : enable
                         ^
/tmp/AMD_11110_171/t_11110_173.cl:83:18: warning: assigning to '__global float *' from 'const __global float *' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
            uA.f = A + k0 * lda;
                 ^ ~~~~~~~~~~~~
/tmp/AMD_11110_171/t_11110_173.cl:179:14: warning: assigning to '__global float *' from 'const __global float *restrict' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
        uA.f = A;
             ^ ~
/tmp/AMD_11110_171/t_11110_173.cl:237:42: warning: incompatible pointer types initializing '__global float4 *' with an expression of type '__global float *' [-Wincompatible-pointer-types]
                        __global float4 *pC = uC.f;
                                         ^    ~~~~
/tmp/AMD_11110_171/t_11110_173.cl:476:34: warning: incompatible pointer types initializing '__global float4 *' with an expression of type '__global float *' [-Wincompatible-pointer-types]
                __global float4 *pC = uC.f;
                                 ^    ~~~~
5 warnings generated.
AFArray: 4×4 Array{Float32,2}:
  2.2628      0.857163  -2.0649    -0.165458
 -0.620097    0.41937   -0.137865   0.750055
 -1.36579     0.733995   2.58582   -1.26445 
 -0.0926348  -0.935992   0.633766   0.562109


julia> versioninfo()
Julia Version 1.1.1
Commit 55e36cc308 (2019-05-16 04:10 UTC)
Platform Info:
  OS: Linux (x86_64-pc-linux-gnu)
  CPU: Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-6.0.1 (ORCJIT, haswell)

Any clues ?

NoelAraujo commented

👌 thank you